/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#include "uv.h"
#include "internal.h"

#define UV_LOOP_WATCHER_DEFINE(name, type) \
  int uv_##name##_init(uv_loop_t* loop, uv_##name##_t* handle) { \
    uv__handle_init(loop, (uv_handle_t*)handle, UV_##type); \
    handle->name##_cb = NULL; \
    return 0; \
  } \
\
  int uv_##name##_start(uv_##name##_t* handle, uv_##name##_cb cb) { \
    if (uv__is_active(handle)) \
      return 0; \
    if (cb == NULL) \
      return UV_EINVAL; \
    QUEUE_INSERT_HEAD(&handle->loop->name##_handles, &handle->queue); \
    handle->name##_cb = cb; \
    uv__handle_start(handle); \
    return 0; \
  } \
\
  int uv_##name##_stop(uv_##name##_t* handle) { \
    if (!uv__is_active(handle)) \
      return 0; \
    QUEUE_REMOVE(&handle->queue); \
    uv__handle_stop(handle); \
    return 0; \
  } \
\
  void uv__run_##name(uv_loop_t* loop) { \
    uv_##name##_t* h; \
    QUEUE queue; \
    QUEUE* q; \
    QUEUE_MOVE(&loop->name##_handles, &queue); \
    while (!QUEUE_EMPTY(&queue)) { \
      q = QUEUE_HEAD(&queue); \
      h = QUEUE_DATA(q, uv_##name##_t, queue); \
      QUEUE_REMOVE(q); \
      QUEUE_INSERT_TAIL(&loop->name##_handles, q); \
      h->name##_cb(h); \
    } \
  } \
\
  void uv__##name##_close(uv_##name##_t* handle) { \
    uv_##name##_stop(handle); \
  }

UV_LOOP_WATCHER_DEFINE(prepare, PREPARE)
UV_LOOP_WATCHER_DEFINE(check, CHECK)
UV_LOOP_WATCHER_DEFINE(idle, IDLE)
